The full findings of the study will be published in the journal Geophysical Research Letters.
As charged particles from the solar wind stream towards the magnetosphere, some are reflected from the shock region in front of the magnetic field back towards the Sun.
"We expected that the frequency of the sounds would be higher in a solar storm, but we didn't expect was that they also become far more complicated".
"It's like the storm is changing the tuning of the foreshock", Turc said.
ESA analysed magnetic waves produced as this "solar wind" hits Earth and turned the results into audible frequencies to produce an "uncanny song that might recall more the sound effects of a science fiction movie than a natural phenomenon".
The discovery was made by a research team led by Lucile Turc, a research fellow at the University of Helsinki's particle physics & astrophysics space physics research group.
Launched in 2000, the Cluster probes have been analysing the Earth's vast magnetic field for nearly two decades.
Audio files of those electromagnetic waves reveal that the waves in the magnetosphere created by a solar storm are much more complex than previously thought. The storm itself is the eruption of electrically charged particles from the sun's environment. The first region of the magnetic field they hit is called the foreshock. When there are no solar particles to contend with, these magnetic waves oscillate on a single frequency and so would convert into a very different, mellower 'song'.
A solar storm hitting Earth's magnetosphere and affecting waves in the foreshock.
Philippe Escoubet, European Space Agency Project Scientist for Cluster, said: "This is an excellent example of how Cluster continues to extend our knowledge of the Sun-Earth connection, even years after the original data was obtained". The swirling pattern to the right is the foreshock region where the solar wind breaks into waves as it encounters reflected particles from the bow shock.
Turc and her team are now working to try and understand how these complex wave superpositions are generated. The archive offers entry to all data obtained throughout the Cluster's ongoing mission over almost 20 years.
Behind the bow shock, the magnetic fields of Earth start to resonate at the frequency of the waves and this contributes to the transmission of the magnetic disturbance all the way to the ground.
Solar storms are a a part of location climate.
The research team used data compiled from the Cluster spacecraft mission's nearly two decades in space.
As part of their mission, the Cluster vessels go through the foreshocks generated by the solar winds.
This new scientific examine based mostly on the long-lived Cluster mission gives one other element in that information; nevertheless, it additionally has a bigger position to play in our understanding of the universe.